Method and device for measuring slag-iron liquid level information of hearth of blast furnace online

Abstract

The invention discloses a method and a device for measuring slag-iron liquid level information of a hearth of a blast furnace online. High-precision electromotive force signals produced by electromotive force measuring points are used as measuring parameters, a computer system performs procedure code analysis on data of different air ports and different tap holes, and liquid level and dead stock information of the hearth is obtained. The measuring basis is change of heat transfer of a refractory material of the hearth and a furnace shell due to different heat storage capacity of slag-iron, and the measuring value is heat transferred by the refractory material and the furnace shell. The computer system responsible for code processing is used as a data visualization system, the inside of each electromotive force measuring point comprises a resistor, a measuring probe and a circuit, and the electromotive force produced by each electromotive force measuring point is directly analyzed and calculated. With the measuring method and device, the change of the liquid level in the hearth is mastered in real time, the blast furnace is guided to discharge iron and slag timely, and monitoring on the basis of daily operation and realizing of stability and long life of the hearth can be facilitated.

Description

technical field [0001] The present invention relates to a method and a device for detecting working conditions of a blast furnace hearth, and also relates to a method and a device for measuring a liquid level, in particular to a method and a device for measuring the information of the liquid-solid interface area in a blast furnace hearth, It is used in the field of blast furnace smelting technology and equipment technology. Background technique [0002] With the development of large-scale blast furnaces, the stability and longevity of blast furnaces are important indicators for a generation of blast furnaces. The working condition of the hearth determines one of the main factors for the stability and longevity of the blast furnace. At present, the data reflecting the working conditions of the hearth are very limited, only the temperature of the thermocouple and the temperature of the cooling water, and these data are only helpful for the abnormal working conditions of the h...

AI Technical Summary

Problems solved by technology

However, in the current stage of blast furnace production, the measurement and visualization of the hearth slag iron level is still blank in China. Although there are researches and applications in this area abroad, they are still in the initial research and development and the reading and decoding of abnormal signals.

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